The LOAD DATA INFILE command will read your CSV file directly and you can have it either ignore duplicates or replace (i.e. keep the first or last). Just read the docs for that command and you should be all set.

In general, don't use Perl for bulk data inserts. The MySQL bulk load is massively faster.

In reply to Re: DBI Question: bulk insertion with Unique-key constraint by perrin
in thread DBI Question: bulk insertion with Unique-key constraint by lihao

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